Combined typewriting and computing machine



H. L. PITMAN.

COMBINED TYPEWRITING AND COMPUTING MACHINE.

APPLICATION FILED MAR. 1. I918.

Patented Oct. 26, 1920.

wm o On A f fame UNITED s'rm zs PATENT OFFICE.

HENRY L. PITMAN, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO UNDERIVOOD COMPUTING MACHINE COMPANY, OF NEW YORK, N. Y.,

NEW roux. V

A CORPORATION OF COMBINED TYPE'WRITING AND COMPUTING iEACHINE.

Specification of Letters Patent.

Patented Oct. 26, 1920.

Application filed mien 1, 1,918. Serial No. 219,711.

T 0 all -w from it may concern:

Be it known that I, HENRY L. PrrMAN, a citizen of the United States, residing in East Orange, in the-county of Essex and State'of New Jersey, have invented certain new and, useful Im rovements in Combined Typewriting and which the following is a specification.

This invention relates to typewriting machines having computing mechanisms applied thereto, and particularly to machines in which a master wheel is controlled bythenumeral keys of the typewriter, and operates the computing Wheels one by one at the ty ing operation.

lhe'invention is illustrated in connection with the well-known Underwood Addendagraph, in which the key-operated master wheel is mounted upon the stationary framework of the machine, while the computing wheels are, mounted upon the typewriter carriage.

In manufacturing machines of this style, it is customary to fit the various parts of the computing mechanism upon the pre viousl completed typewriting machine, and to ma e certain alterations in' the typewriting machine. 7

It is usually necessary to secure very exact cooperation between the master Wheel and each of the computing wheels; and this 7 result is found in practice to be diflicult and expensive to attain, partly because typewriting machines are not usually manufactured with that extremely high degree of accuracy which is necessary in a key-driven computing mechanism, and partly because the length of the typewriter carriage, in a machine of this class, is usually very great, and the longer-the carriage, the more diflicult it is to effect satisfactory fitting and cooperation of the master wheel with the computing wheels. The computing wheels are usually assembled in groups, each group having a separate mounting to form a separate totalizer. and each totalizer being usually adjustable to any position along the carriage, so that the range'of carriage travel, which must conform to the requirement of accurate fitting, is very great.

In said Underwood Addendagraph, it is the practice to form the typewriter carriage with a front vertical plate, and to support said plate by means of ball or roller hearomputing Machines, of

able by a portion of its length in the vicinity of the ings upon a track-bar which is fixed upon the machine frame, and which comprises upper and lower grooved rails, between which said carriage plate is. arranged, said plate! having complementary ball-grooves upon'its'top and bottom edges; and for the purpose'of securing the necessary leveling of t e track and also the necessary accurate fitting throughout their length of the grooved rails which form the track, it is customary to make said track-bar in upper and lower parts, each part having one of the grooves and also to provide for very fine adjustment of the upper and lower rails relatively to each other throughout their length. This adjustment requires a higher degree of skill, and consumes much time, and is otherwise expensive.

The main feature of the resent invention is to reduce the cost of tting and adjustment of said front carriage-track.

I so form the track that the carriage plate which travels thereon wiil loosely fit along said track, except near that portion thereof which is in the vicinity of the master wheel and carry-over mechanism, at which portion the totalizer will be rigidly held against p ay.

In producing the track, according to the present improvements, the entire track may e made integral, or at least it ma be made with its end portions unadjustab e up and down. The middle portion of the track is slitted for a substantial portion of the length of the track, and at this slitted portion provision is made for fine up-and-down adjustments of the grooved rails relatively to each other.

In other words, the track is made adjustan aperture or slot extending over usual master wheel and carry-over mechanism, so as'to make said track slightly fiexibleor bendableat the portion over which said slot extends. The track at this portion is provided with adjusting mechanisms, whereby it may be expanded or contracted, so that the distance between the grooves or rails thereof may be increased or diminished, so that said rails may lie in closer proximity to the grooved carriage plate at this adjustable portion than at the gother portions. The arrangement of ball-bearings is such that a number of bearings will at all times lie within said adjustable rail portion, coacting to. hold the totalizers against displacement. 7

Since in this type of machine the master wheel and adjacent actuating mechanism are located centrally of the machine, the track is made adjustable only at the central portion thereof. No computing action takes place on any totalizer when it is at either end of the track. It is, therefore, unnecessary to incur the difliculty and expense of providing fine ad ustments or accurate movement of the parts at the ends of the track. r W

The end portions of the track are therefore never accurately fitted, but permanently remain a trifle over-separated. In fact, as the track is originally made, the groovesor rails throughout their length area trifle overseparated, so that no attempt is made to secure, at the track-milling operation, any fine degree of air-curacy, whereby expense is reduced. Then the adjusting screws are brought intoplay to cause the central portions oi the rails to approach each other, until the desired accuracy is secured at this portion.

The trifling play or looseness at the end ortions of the track is found not to be obectionable, since the ball-bearings are so spaced and so placed with relation to the split and accurately-adjusted portion of the track that no shake or play occurs at the point where the master wheel is operating upon a totalizer, regardless of where said totalizer is placed along the carriage.

Hence, the track with its grooves may be made in one piece; the grooves are inexpensively milled therein to allow play throughout the travel of the carr age, and then the split portion ofthe track is adjusted to take up such play, so that there is no appreciable play at the point where the master wheel is operating upon the computing wheels at anytime. Thus, such accuracy of operation as is necessary is secured. but at a much less expense than by the usual method.

Preferably one of the rails of said track is made to bear a fixed relation to its base, and the opposed rail is made adjustable in the vicinity of the master wheel. The master wheel and adjacent actuating mechaanism are mounted in fixed relation to said fixed rail, so as to be in. proper meshing relation with the wheels of the totalizer and still permit adjustments of the track relatively to the bearings therebetween and the carriage plate on which the totalizers are mounted.

Other features and advantages will hereinafber appear. 7

In the accompanying drawings.

Figure 1 is a part-sectional front View, showing a portion of the Underwood Addendagraph with the invention applied thereto, the position of the bearings being indicated when the carriage is near its cen tral position.

Fig.- 2 is a side View of a portion of the Underwood Addendagraph, showing .the front rail, on which the carriage and totalizers travel, in section at its adjustable portion.

Fig. 3 1s a diagrammatic sectional view taken on the line 3-3 of Fig. 1, when the carriage is at the extreme end of its rightward travel, showing one group of bearings within the adjustable portion of the rail and one group without said adjustable portion.

Numeral keys (not shown) actuate typebars 10, Fig. 2, to strike against a platen 11, mounted on a typewriter carriage 12, slidably mounted on a bar 13 at the rear of the machine and a track 14 at the front of the machine. The carriage is provided with the usual escapement mechanism controlled by the keys, and is driven by a spring barrel (not shown). One or more totalizers 15. Figs. 1, 2 and 3, are adjustably mounted on a plate 16, which forms part of the carriage 12.

To rotate the computing wheels 17, Fig. 2. of the totalizer at the actuation of the numeral keys, there is provided an actuating mechanism, indicated in general at 18, including a master wheel 19 and adjacent carry over mechanism 20, which is usually mounted at the central portion of the machine in front of and below said track 14. The wheels 19, 20 of said actuating mechanism are connected to the numeral keys to rotate the, computing wheels in accord with the digital value of any numeral key actuated, said rotation being imparted to the wheels 17 of any totalizer 15 when said totalizer is in a computing zone, Figs. 2 and 3, that is, when its wheels are in juxtaposition with the master wheel 19 and wheels of the carry-over mechanism 20.

To secure accuracy of cooperation between the totalizer wheels 17 and the master wheel 19 and carry-over wheels 20. and to hold said totalizer 15 rigidly during the computing action, the latter is positively guided and held against displacement, beginning preferably just prior to its entrance into a computing zone before its wheel 17 of highest denomination meshes with the master wheel 19, and continuing for a short distance after its wheel '17 of lowest denomination passes the'wheels of the carryover mechanism 20.

Fo this purpose. the from; track 14, Figs. 1 and 2, is rigidly supported at its ends 22 by brackets 23 fast to the sides of the framework 24 of the machine. and that portion of the track 14 which lies near and within the comlputing zone or near the master wheel is provided with means for adjusting'the track. The track 14 includes horizontally-disposed upper and lower rails 25, 26, respectively, formed integrall with a common base or plate 27, which as an aperture-or slot 28 formed at its central upper portion 29, Fig. 1, near. the central ortion 30 off the upper rail 25., Said rail is in the found a groove 01'. channel forming bearing surfaces 31, F i'g.,2, which are arranged in an opposed oryoomplementary manner to similar bearing sunfaces .32 formed on the lower rail 26 of said track. The bearing surfaces 31, 32 are in 'thelform of V grooves to receive balls or,-,rolls 36.

The normal distance between 'the rails 25, 26 ofi the track 14 is such that said front plate 16 which runs on ball'bearings or preferably on'roller bearings along said track -will fit loosely between the rails of said track,'so as to allow considerable play or dost-motion between .said' bearings and 'thebearing surfaces 31, 32, F ig. 2, formed on the track and the'bearingsurfaces 33,

34 formed on opposed bars .or ,rails 35-01 the plate 16 on which thentotalizers are mounted. The ttrack 14 is provided with an adjusting mechanism, F lg 1, in the form of expanding'and contracting devices lo cated at the central portion, 29 of the track "to *inoreasewdr diminish the distancebetween the :rails 25, 26 at said v central portion. 7,. l For forcing the upper rail 25 awa from the lower rail 26, there are provid ed expansion screws 37, Fig. 1;- '.Sa1(i.SCI'BWS are threaded through the flexible portion of the track near the central portion 30 of the upper rail 25, with theirnends abutting against the rigid fixed portionnof the ,rail

ba se' 27. 1f saidsorews are'turned inwardly,

their ends abutting against-said fixed, portion w'ijl'cause :the upper rail- 25- to spring (5 or moveaway from :thelowecrail 26,-.thereby increasing-the distance between said rails.

If sa id sc'rews are turned outwardly, the upper il portion 30 will spring: or. return to its ndrmalposition. IVY- {To diminish the distance between the rails 25, 26 and 35, contraction, screws 38, ,Fig.

1,"ar'e"-"opp0sitely arranged relatively to the expanslon screws 37, ranilmpassnloosely through said flexible' portionpf the track 14'. and are threaded into the-fixed portion of said 'railba'se 27. Said contraction screws 38 are sofarranged that when turned inwardly.

"the lower surface of their heads iwill bear down on the central portion 30 of'the upper rad-25. thereby moving said rail into closer proximity with its opposed lower rail 26 and the rails35' on the front plate 16 carrying the totalizcrs, thereby diminishing the distance between the rails and the amount thereby minimizing the length of pjered portions 39 of said rail 25.

of lost-motion therebetween and the bearin s 36. p

t will be noted that the expansion and contraction screws 37 and 38, respectively, pass through the slot28, Fig. 1, provided in the base 27 of the track 14. It will also be noted that in the use of said screws, the contraction screws 38 may be loosened prior to the manipulation of the expansion screws 37,and vice versa; and that when the desiredadjustment is effected, those screws .which have been employed to effect ,said adjustment are tightened thereby locking the. parts in their adjusted positions. It willalsobe noted that by the manipulation of saidscrews the cross-sectional area of the raceways. may be varied at the adjustable rail portion 29 while said area at other trail portions remains consta nt.

By employing railvadjusting means, as herein descr bed, there will be no break in -.the continuity of the bearing, surfaces of the 1118 rail,25 is taperedfronl a',point about .-where said contraction screws 38 arelocnte'd. -t0-a,point. about where the slot 28 in said vtrack 1:1 ends,as at 39. These tapered rail I portions 39. arefiexible and serve to connect the-adjustablerail portion 30 with the fixed rail portions,

Since the bearings, 3G,run within the track 14 in this embodiment otthc invention. it is desirable that the track contraction mechanism shall include agreatcr part of said adjustable track portion 29'.

For this purpose, the contraction screws 38, Fig. 1, are placed nearer the ends of the 'slot 28 thanythe' expansion screws 37, thereby placing within the control of the screws .38 a grentendengthmf rail portion 30 than controlled by theexpansion screw' 37, and the' ta- The bearings 36. are mounted in cages 40, one for the bearings running: on the upper rails 25 and '35, and,,one for the bearings winning on; the lower rails 26 and 35, and ,areisoplaced on said rails as to run in unisoulaterallyalpngthe track 14, a distance :of half a letter-space for every letter-space movement of the typewriter clnrriagzeilQ and plate 16 on'whiqh'the totalizcrs 15 are mounted, and inthe same direction, The bearings 36 are placed on the rails as to lie centrally on the track 14 when the typewriter, carriage 12 is in its central position. The inventionis not limited to the use of balls or rolls which travel at half the speed of the carriage.

It will be seen, by reference to Figs. l and Ii, that the bearings Jiti on which the front plate It; travels along the track are so ll! ranged that a lurality of said bearings 30 always lie within the adjustable portion 2% of the track, said adjustable portion be ing of such extent relative to the lateral distanre between the end bearings as to ctfcct this condition. In other words, when the typewriter carriage 12 and connected parts are centrally positioned. as approxi mately and diagrammatically shown in Fig. 1, all the bearings 36 will lie within the adjusted portion 29 of the track 14 and on each side ofthe actuating mechanism 18, thereby holdin g the totalizer 1o juxtaposed on said actuating mechanism against vertical displacement. \Vhen said carriage is moved to the extreme'end of its travel, one group of bearings 36 will lie snugly within the adjustedportion' 29 of the rail near tllt' actuating mechanism 18. thereby holding the juxtaposed totalizer against displace wont. even though other portions of tln plate 16,011 which said lotalizcrs ar niounl ed, may he loose on the bearings.

it will be seen that with this arrangement. as ohe group of bearings 36 leaves the ad justalile rail portion 29 when the carriage 12 travels laterally, another group of bearings 36' rolls into said adjustable portion before the first group is without the adjustable portion, so that a group of bearings 36 will at sill times lie within said adjusted rail portion 29 when the carriage 152 is at. any ofits severalpositions'between the ex treme'ends of its travel.

The adjusting means, may also be used or correcting inimcura cies in the distance between the rail: of the track 14.

It will be noted that the parts wear mostly along the adjustable portion 29 of the rail. since there is less lost-motion between said parts within said portion than at other por tions, the parts being loosely mounted within said other portions. ,The small amount of wear ooouring on said other portions, duri the long continued use of the machine, wt 1 not prove objectionable.

If, however, the lower rail 26 should become excessively worn, so that the computing wheels 17 of the totalizer should lie too close to the master wheel19 and carry-over wheels 20, the rail may be bodily raised on the supportin brackts 23; adjustment for this purpose a so being rovided at the point as at 41, Fig. 1, where the master wheel and adjacent mechanism are attached to the track.

The track 14 may be economically produced, and with less accuracy than that usually required. The opposed rails 25,26, having V-grooves, or other contour, may be milled simultaneously and equidistantly herein disclosed,

put'ing machine, traveling carriage, 1 travels, a totalizer, amaster wheel, t'wo rails throughout the entire length of the truck. Then the holes may be drilled and threaded tor the adjusting screws 37, 38. Thus tar the track 14 is rigid throughout, and cutting operations may be performed with certainty. After the above cutting operations are performed, the aperture or slot 28, which gives the rail its flexibility, may be cut. The track, therefore, will not spring under the strain of the cutting operations.

The roller bearings 36, or other form of bearings, need not be formed with as great care and accuracy as heretofore. It is only essential that the bearings 30 in a set shall be of equal dimensions. Other sets of bearlugs 36 may be employed of difi'erent dimensions within the capacity of the track 14 at its fixed portions, the adjustable portion 29 being set in HM 1rd with the dimensions of the hearings 36 and toe distance between the rails of the track 14 and the plate 16 on which the totaliaers are mounted, and on which said hearings 3t) run. \Vhen worn r broken hearings. are lit-in; replaced, it is llt l essential that the new hearings shall lit.

ol' cmn-tly the same ilinmnslons as the old tllllt It will also be seen that the plate it), along which the totalizers are mounted, need not be accurately formed with respect to the dis tance between its bars 35, because of the adjustability of the track 14. This avoids undue expense in the production of said plate 1.6. 1

Variations may be resorted to within the scope of the invention, and portions of the iini'irovemcnts may he used without others.

Having thusdescribed my invention, l (hi ini 1. ln :1 combined typcwritiiig and computing machine, the combination with a traveling carriage, of a track on which it travels, a totalizel', a master wheel, two rails fixedly connected throughout certain POI" tions by a base, forming said track, a plate on said carriage on which said'totalizer is mounted, said plate running onisaid track, and means :for adjustingsaid track, in a portion of its length relatively to the plate.

2. In a combined typewriting and. comthe' combination witha of a track-on which it fixedly connected throughout certain portions by a base, forming sa-id'track, a plate on said carriage on which said totalizer is mounted, said plate running on said track, and means for adjusting said track, in a. portion of its length relatively to the plate, said means -including track-adjusting mechanisms.

3. In a combined typewritingand com puting machine,-the. combination with a travelingcarriage, of a track on which it travels, a totalizer, a master Wheel, two rails nausea connected in a base forming said track, a plate on said carriage on which said totalizer is mounted, said plate running on said track, and means for adjusting a portion of said track relatively to the plate, said means including a track-contracting mechanism and a track-expanding mechanism.

4. In a combined typewriting and computin machine, the combination with a trave mg carriage, of a track on which it travels, a totalizer, a master wheel, two rails fixedly connected throughout certain portions by a base, forming said track, a plate on said carriage on which said totalizer is mounted, said plate running on'said track, and means for adjusting said track, in a 1'- tion of its length relatively to the plate, said means being adapted to hold said track in adjusted position. a

5. In a combined typewriting and computing machine, the combination with a totalizer, of a master mechanism, a totalizer carriage including a plate having V-grooves facing in opposite directions, plate-guiding means including an integral track-plate having V-grooves facing those of the carriageplate, means for adjusting relatively to each other the grooved portions of said trackplate along an intermediate portion of its length, and means for supporting said track plate in dilferent adjusted positions.

6. In a combined typewriting and computing machine, the combination with a totalizer, of a master mechanism, a totalizer carriage including a plate having V-grooves facing in opposite directions, plate-guiding means including an integral track-plate having V-grooves facing those of the carriageplate, said track-plate having a longitudinal iot near its upper grooved portion and extending along an intermediate portion of the track-plate, and means to adjust the position of the upper grooved portion of the trackplate with reference to the lower in the vicinity of the slot, said adjusting means including a plurality of screws for drawing the upper grooved portion toward the lower and a plurality of screws for forcing it away.

7. In a combined typewriting and computing machine, the combination with a traveling carriage, of a track mounted -on the frame of the machine, a plate on said carriage extending in front ofsaid track, bearings between said plate and said track, said track including two bearing-surfaces integral with a common base, and means for varying the distance between only a portion of said bearing-surfaces.

8. In a combined typewriting and computing machine. the combination with a traveling carriage, of a totalizer, a plate on said carriage for mounting said totalizer, and a track on which said plate and totalizcr travel, said track being formed integrally and having an aperture and adjustin devices thereon for adjusting it relativey to the totalizer.

9. In a combined typewriting and computing machine, the combination with a traveling carriage, of a totalizer, a master wheel mop'erating with said ltotalizer, a plate on said carriage on whichsaid totalizer is mounted, and a track on which said plate and totalizer travel, said track havin a rigid portion near said master wheel an an op osite resilient portion.

10. n acombined typewriting and computing machine, the combination with a traveling carriage, of a totalizer, a master wheel coiiperating fwith said totalizer, a plate on said carria on which said totalizer is mounted, an a track on which said plate and totalizer travel, said track having a rigid central portion and an opposite resilient central ortion.

11. In a com ined typewriting and computing machine, the combination with a traveling carriage, of a totalizer, a master wheel cooperating with said totalizer, a

plate on said carriage for mounting said totalizer, and a track on which sai plate and totalizer travel, said track including relatively-adjustable rails integral with a common base.

12. In a combined typewriti and computing machine, the combination with a traveling carriage, of a totalizer, a master wheel coiiperating with said totalizer, a plate on said carriage for mounting said totalizer, a track on which said late and totalizer travel, said track inclu ing relatively-adjustable rails integral with a conimon base, and adjusting devices mounted on said base.

13. In a-combined typewritiiig and computing machine, the combination with a traveling carriage, of a totalizer, a master wheel coiiperati-ng with said totalizer, a plate on said carriage for mounting said totalizer. and a track on which said plate and totalizer travel, said track having fixed and adjustable portions arranged in succession longitudinally of said track.

14. In a combined typewriting and computing machine," the combination with a traveling carriage, of a totalizer, an actuating mechanism coiiperating with said totalizer, a plate on said carriage for mounting the totalizer, and a track on which said plate and totalizer travel, said track having fixed end portions and an: adjustable central portion near the actuating;' mechanism.

15. In a combined typewriting and coming a rail having a traveling carriage,

travels, a 'totalizer,

fixed lower rail and acentrigiy adjustable upper rail havin its ends ii 16. In a combined typewriting and computin machine, the combination with a traveling carriage, of a 'totalizer, anactuating mec anism coi'iperating with said totalizer, a plate on said'carriageior mounting said totalizer, and a track on which said plate and totalizer travel, said track includfixed portion opposite the actuating mechanism,'anda rail having fixed end portions and an adjustable portion opposite the fixed portion ofthe first mentioned rail near said actuatingmecha- 17. In a combined typewriting and computing machine, the combinat1on with a totclizenof a master wheel, a tota11zer carrings, and a track for saidtotalizer carriage, comprising two ra1ls,'connect1ng 'means whereby said'rsils are held fixed relatively to each other throughout the? greater part of their length, but are permitted to have relative movementin master wheel, and means to efiect relative adjustment of the rails in the vicinity of said master wheel, to obtain proper pos1- tioning of said totalizer carriage with reference to said master wheel.

18. In a. combined typewriting and computing machine, the combination with a traveling carriage, of a totalizer, a master wheel coperating with said totalizer", a plate on said carriage for mounting said totalizer, and a track on which said plate and totalizer travel, said track including two rails, one of which'is'fixed at both ends and centrally adjustable. V

19. In a combined typewriting and computing machine, the combination with a traveling carriage, of a traek'on which it travels, a totalizer, a master wheel, two rails rigidly connected at each side of said master wheel by a common base forming said track, a plate on said carriage on which said totalize: is mounted, said plate running on said track, and means for varying the distance between said rails at the central portion of said track.

20. In a combined typewriting and computing machine, the combination with a of a track on which it a master wheel, two rails rigidly connected at their end portions by a common base forming said track, a plate on said carriage on which said total-- izer is mounted, said plate running on said track, and a plurality of screws for varying the distance between said rails at the cen trzil portion of said track.

21. In a combined typewriting and computing machine, the combination with a traveling carriage, of a track on which it travels, a totalizer, a master wheel, two

the vicinity of said 1,ase,aee

rails rigidly connected at their end portions by a common base forming said track, a plate on said carriage on which said totalizer is mounted, sai plate running on said track, a plurality of screws for increasing the distance between said rails in their central portions, and a plurality of screws for diminishing the distance between said rails in their central portions.

22. In a combined typewriting and computing machine, the combination with a totalizer, of a master mechanism, a totalizcr carriage, and a totalizer-carriage track, comprising two rails connected by plates, one on each side of said master mechanism, integral therewith, but disconnected opposite said master mechanism, and means to effect relative adjustment of said rails in the vicinit of said master mechanism, in order to obtain an accurate positioning of said totalizer with reference to said master mechanism in passing the some.

23. Iii a combined typewriting and computing machine, totalizer, of a master wheel, a totalizercarrying plate, and a plate-guiding means includin a track, comprising two rails, and means or moving portions of said rails toward and from each other and to retain the some in ad'nsted position.

24. In a combined typewriting and computing machine, the combination with a traveling carriaE of a plate on said carridge traveling therewith, a totalizer adjustable along said plate and adapted to travel therewith over a master wheel, and a track on which said carriage and plate travel, said track rigidly holding said totalizer when in a computing zone, and loosely holding said totalizer when out of a com uting zone.

25. n a combined typewriting and computing machine, the combination with a traveling carriage, of a plate on said carriage traveling therewith, a track; along which said piate and carriage travel having successive adjustable and rigid portions arranged longitudinally thereof, and hearings on said plate traveling along said track, one or more of said bearings lying within said adjustable track portion in any position of said plate along said track.

26. In a combined typewriting and computing machine, the combination with a traveling carriage, of a plate on said carriage traveling therewith, a totalizer edjustably mounted on said plate, a track having successive adjustable and fixed portions, arranged longitudinally thereof, along which said plate, carriage and totalizer travel, a master wheel mounted near said adjustable track portion, and bearings troveling between said plate and track, said bearings being so arranged that one or more the combination with a of said bearings lie within said adjustable track portion when said totalizer is in juxt'aposition with the master wheel.

27. In a combined typewriting and computin machine, the combination with a traveling carriage, of a plate on said carriage traveling t erewith, a totalizer on said plate, a master wheel for actuatin said totalizer, and a track includin a xed rail and a rail having an adjustab e portion and fixed ortions, said master wheel being attaic'hed to said fixed rail at a point opposite said adjustable rail portion.

28. In a combined typewriting and computing machine, the combination with a traveling carriage, of a plate on said carriage traveling therewith, a track on which said carriage and plate travel, a master wheel bearing a fixed relation to a portion of said track, carry-over mechanism bearing a fixed relation to a portion of said track, a totalizer adjustable along said plate and traveling therewith over the master wheel and over said carry-over mechanism, and means for adjusting another portion of said track relatively to the master wheel and carry-over mechanism to maintain a substantially fixed relation between the totalizer and the master wheel and carry-over mechanism at any position of the totalizcr along said plate. I

29. In a combined typewriting and computing machine, the combination with a traveling carriage, of a plate on said car riage traveling therewith, a totalizer ad justabl? mounted on said plate, a track havmg a justable and rigid portions along which the plate, carriage and totalizer travel, a master wheel mounted near said adjustable track portion, carry-over mechanism mounted near the adjustable track portion, and bearings traveling between the plate and track, said bearin being so arranged that one or more ii earings lie within. said adjustable track portion when said totalizer is in juxtaposition with the master wheel and with the carry'over mechanism.

30. In a combined typewriting and computing machine, the combination with a traveling earria e, of a' plate on said carriage traveling therewith, a totalizer adjustably mounted on said plate, a track havin adjustable and fixed portions along whic said plate, carriage and totalizer travel, carry-over mechanism mounted near the ad- 'ustable track portion, and bearings traveling between said plate and track, said bearings being so arranged that one or more bearin s lie within the adjustable track portion w en said totalizer IS in juxtaposition with the carry-over mechanism,

3]. In a combined typewriting and computing machine, the combination with a traveling carriage, of a plate on said carrespect to sai riage traveling therewith, a totalizer on said plate, a master wheel for actuating said totalizer, carry-over mechanism cooperating with said totalizer, a fixed rail over which said plate and totalizer travel, and a rail having an adjustable portion, said master wheel and carry-over mechanism being attached to said fixed rail opposite said adjustable rail portion.

32. In a combined typewriting and computing machine, the combination with a traveling carriage, of a totalizer on said carriage movable into and out of a computing zone, and a track including rails on which said carriage and totalizer travel. said rails being in closer proximity at the com puting zone than at other points along the track.

33. In a combined typewriting and computing machine, the combination with a traveling carriage, of a totalizer on said carriage movable intoand out of a computing zone, and a track including rails on which said carriage and totalizer travel, said rails b ing differently spaced at the central portion of the track than at other points along the track.

34. In a combined typewriting and computing machine, the combination with a traveling carriage, of a totalizer on said car riage movable into and out of a computing zone, and a trackincluding rails on which said carriage and totalizer travel, said rails being differently spaced at the computing zone than at other points along the track.

35. In a combined typewriting and computing machine, the combination with a traveling carriage, of a plate including rails on said carriage, a totalizer movable into and out of a computing zone mounted on said plate, a track including rails on which said plate and totalizer travel, and bearings between said plate-rails and track-rails, said track being so arranged that the rails are in closer proximity to said bearings at the computing zone than at other points along the tracklate.

36. n a combined typewriting and computing machine, the combination with a traveling carria e, of a plate on said carriage traveling t erewith, a totalizer adjustable along said plate and adapted to travel therewith over a master wheel, said totalizer including computing wheels, and a track on which said carria e and plate travel, said track rigidly holding the computing wheels in mesh with the master" wheel when the latter are driven by said master wheel, and loosely holdin them when out of range with master wheel.

37. In a combined typewriting and computing machine, the combination with a traveling carriage, of a platen mounted on said carriage including a plurality of computing zones, a totallzer on said carriage traveling therewith, actuating mechanism travel, said track having fixed and adjust- 66 co? crating with said totalizer, a track alon able portions arranged in succession longiwlnch said carriage and: totalizer' travei tudinally thereof, and a master .wheel and said track havin a fixed p'ortion and the carryover wheels cooperatingwith said toportion ncnnsni actuating mechanism adtalizers, said wheels end said adjustable justnhle and mcansdor-adusting saidtraek track portion being attached to a'common 65 portion to 'hold thei'total izerjlagainst dis support, said adjustable portion extending placement when computing inlnnyof said laterally beyond the master wheel andany Zones. 1 i. i a of the carry-over wheels.

38,:1ni'mlc0mbined typewriti'ngend {com} A2. ;In a combined typewritingnnd computing machine; the combination-{Midis :putingn machine, the-combinat on with a 70 traveling carriage of a-[plate on, saidcurtraveling carriage and a tracknlong which riageiwhavingwbpposed :vegrooves; formed it travels, of fixed track portionsyand a !thereon,;n 'tracknhaving suceessive adjusttrack portion, betweensaid'fixed. portions is able and fixed; ortions',arranged longitudiadjustablmto severalpositi ons, oonti ous l 'allyitliereoffa on lzwhich said plate travels, with said fixed track portionsinanyo said 75 said track having -groves formed thereon several positions. Y y J opposedtogthea=V-grooveson said plate, the 43. In a combined typewriting and com- =V- 'rooveszforming raceways of rectangular puting machine; the combination with e tocontonr, bearingsirunnin in said race-ways, talizer, of amaster mechanisma totalizer intotalizer mounted on sa diplateand travelcanri in l din l t h V'l a 30 ing 'therewitli', actuating mechanismipo iperiacing inlopposite directions, p ate-guiding sting 'with saidwtotalizer, and means for means includin an integral track-plate havvaryingr the cross-sectional area of said race ing V-grocves acing those of th a i 5 :wnys at saidadflnstahletrack portionplate, andmeans for adjusting relatively to 39. In a combined typewriting and com each other the grooved portions of said 86 pitting machine. the icombination with a track'plate along an intermediate portion of :tmvflingwi'arniagre ofen plate onssaid-carsl ugh, t t H ria e"sharing--- bpposed- Mgrooves, formed 44. In a combined typewriting and comso 'UHJPQIT. n trait-k having adjustable and fixed puting machine, the combination with, a. to-

)or tions arranged .in succession ilongituditalizer, of a master wheehiaptotalizerccar- 90 nal'ly tllQIBOfyillODgjYhlCll said plate travels, ringe, and carriage-guiding means includin said track having ill-grooves iormed therea track, comprising 13115 111 6838 to hold sai on-oppose'd 101L116 Vegrooves, on; said plate, rails relatively fixed in certainportions of tlie V -grooyesiforming racevays of rectan the track, and means to adjustwsaid irails gulnr-contonr,=bearings running inisaid racerelatively to each other in the vicinity of said 9 5 ways; :a totalizer r'nounted on said plate and master wheel. j r traveling therewith actuating mechanism 45. In a combined typewriting and comeoiiperating with said totalizer, and means puting machine, the combination with a 40 for varyingrzthe:cross-sectional area of said traveling carriage, of a track comprising a race-ways at saidiadjustable track portion. rail along which the carriage travels, a rail 100 HiOJIn alcombinedtypewriting and comportion opposite each end portion of said puting imachine, the combinatmmwith a rail and fixed thereto, and a rail portion optravelin iicarriagemfa track having adjust posite the central portion of said rail an ablean fixed portions, iarrangeduin sliccesadjustable with respect thereto. I

sion longitudinally thereof, along which said 46. In a. combined typewritingmndgom- 105 carriage travelsgea plate-on said ;,carriage pnting machine, the combination w'thja formine a mounting for .totalizers andtravtalizenof a master wheel etotalizer-carryeling-alhng said track, nndiactnating mechaing plate, and: plate-guidlng means includnisrn near said adjustable track portion -c0- ing a track, comprisingitwo rails, and aco1noperating with said'totalizers, said track bemen base inte ral therewith and having pro- 110 cc between said ing adapted ,to hold said totalizers against visions where y the distan vertical displacement when inxjuxtaposition rails in the vicinity of said master wheel with saidactuating mechanism. may be varied. 41. 111 ii combined typewriting and comr doting machines-thiecomhinatiomwith a HENRY L. PITMAN.

triu elin'g carriage and a plate on, said car- Vitnesses: rings on whioh totuhzersare mounted, of'a EDITH B. Lmnnr,

plate and totalizers CATHERINE A. Nnwnnn.

track along which said 

